Display device and driving method for display device

Patent metadata

Field	Value
Publication number	US-10891896-B2
Application number	US-201916570088-A
Country	US
Kind code	B2
Filing date	Sep 13, 2019
Priority date	Mar 16, 2017
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A display device includes a first pixel arranged with a first light emitting element having a first pixel electrode and a common electrode, and a drive transistor having an input/output terminal, one end of the input/output terminal being connected to the first pixel electrode, and a second pixel adjoins the first pixel electrode, and is arranged with a second light emitting element having a second pixel electrode and the common electrode, wherein the first pixel electrode and the second pixel electrode are connected via first switch.

First claim

What is claimed is:

1. A display device comprising:
a first pixel having a first light emitting element including a first pixel electrode and a common electrode, and a drive transistor having an input/output terminal, one end of the input/output terminal being connected to the first pixel electrode;
a second pixel adjoining the first pixel, and having a second light emitting element including a second pixel electrode and the common electrode; and
first switches including a first switch of the first pixel,
wherein
the first pixel electrode and the second pixel electrode are connected via the first switch of the first pixel,
the first switch of the first pixel is ON when a video signal is written to the first pixel, and
the first light emitting element and the second light emitting element are connected in parallel.

2. The display device according to claim 1 , wherein
a first capacitor is connected in parallel with the first light emitting element,
a second capacitor is connected in parallel with the second light emitting element,
the first capacitor includes a first electrode connected with the first pixel electrode,
the second capacitor includes a second electrode connected with the second pixel electrode, and
the first electrode and the second electrode are connected via the first switch of the first pixel.

3. The display device according to claim 1 , further comprising
a first switch of the second pixel included in the first switches; and
a third pixel adjoining the second pixel and arranged with a third light emitting element having a third pixel electrode and the common electrode, wherein
the second pixel electrode and the third pixel electrode are connected via the first switch of the second pixel.

4. The display device according to claim 3 , wherein
the first pixel, the second pixel and the third pixel are mutually connected by connecting the first pixel electrode, the second pixel electrode and the third pixel electrode via the first switches.

5. A display device comprising:
a first pixel having a first light emitting element including a first pixel electrode and a common electrode, and a drive transistor having an input/output terminal, one end of the input/output terminal being connected to the first pixel electrode;
a second pixel adjoining the first pixel, and having a second light emitting element including a second pixel electrode and the common electrode; and
first switches including a first switch of the first pixel, wherein
the first pixel electrode and the second pixel electrode are connected via the first switch of the first pixel,
the first pixel includes a second switch, a capacitor element arranged with a pair of electrodes, a third switch, a fourth switch, a fifth switch and a power supply line, a first terminal of the second switch is electrically connected with a gate of the drive transistor,
a first electrode of the capacitor element is electrically connected with the gate of the drive transistor,
a second electrode of the capacitor element is electrically connected with the first pixel electrode,
a first terminal of the third switch is electrically connected with the first terminal of the second switch, the first electrode of the capacitor element, and the gate of the drive transistor,
a first terminal of the fourth switch is electrically connected with the second electrode of the capacitor element and the first pixel electrode,
a first terminal of the fifth switch is electrically connected with the power supply line, and
a second terminal of the fifth switch is electrically connected with a second input/output terminal of the drive transistor.

6. The display device according to claim 5 , wherein
the first pixel includes a sixth switch located between the drive transistor and the fifth switch,
a first terminal of the sixth switch is electrically connected with the first terminal of the fourth switch and the second terminal of the fifth switch,
a second terminal of the sixth switch is electrically connected with the second input/output terminal of the drive transistor, and
the first terminal of the fourth switch is electrically connected with the second electrode of the capacitor element and the first pixel electrode via the sixth switch and the drive transistor.

7. The display device according to claim 5 , wherein
the first pixel includes a fourth switch, a fifth switch, a sixth switch and a power supply line,
a first terminal of the fifth switch is electrically connected with the power supply line,
a second terminal of the fifth switch is electrically connected with the first terminal of the fourth switch and a first terminal of the sixth switch, and
a second terminal of the sixth switch is electrically connected with the second input/output terminal of the drive transistor.

Assignees

• Japan Display Inc

Inventors

• Wu Ilin

Classifications

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2310/0262

  The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes · CPC title

• G09G2310/0251

  Precharge or discharge of pixel before applying new pixel voltage · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G3/3266

  Details of drivers for scan electrodes · CPC title